Features Applications

q Modular electronics for user repair and upgrade q 3 or 6× channels, up to 2000 sps sampling rate q Low noise individual 24-bit D-S ADC per channel q Internal built-in and/or external sensor options q Wired, Wi-Fi×, GSM×, satellite× links q Power-Over-Ethernet and wide power range q Smart satellite× or network timing q USB for storage and communication devices× q Continuous data recording to ringbuffers q Flexible configuration of multiple triggers q Simultaneous data streaming to several clients q Virtual signals from realtime processed sensor

signal q Rugged aluminium housing with easy

installation q Web Interface compatible with smartphones /

tablets q Simple and secure remote access over Internet q Alarm output with up to 4 dry-contact relays× q Internal battery×, low power consumption q Hot swappable SD card q Third generation of NetQuakes Recorders

q Seismic and Earthquake Recorder q Structural Health Monitoring q Real-time Seismology for Free-field and Urban

Areas q High Density Earthquake Monitoring Networks q Shake / Hazard Mapping based on Instrumental

Data q Earthquake Early Warning and Rapid Response q Damage Estimation, Disaster Management q Seismic Alarm and Safe Shutdown q Ambient Vibration Testing (optionally fully

wireless) q Induced Vibration Monitoring and Notification q Building Code Compliant Instrumentation

With its optimized installation, operation and maintenance philosophy scai offers the real possibility to measure any dynamic motion with an abundance of features and options. Highly reduced cost of ownership and user-friendly approach in the design make scai the perfect choice for the most advanced user. Numerous optimisations within the architecture and the design yields unprecedented performance for seamless and fast execution of all system processes. Fully compatible with existing GeoSIG sensors and can co-exist and co-perform in the same network as the GMS series recorders. The simple upgrade path makes the scai "future proof".

User-replaceable modular plug-in electronic boards make scai extremely maintainable and future-proof

Specifications subject to change without notice Copyright © GeoSIG Ltd, 22.08.2019 / GS_scai_GMS_series_Datasheet_V02.docx

Use and Versatility ____________________________________________________ An intuitive web interface is available for easy configuration and interaction as well as display of live data graphs and state of health information, using any web browser. The device configuration file in XML format can be alternatively edited on site through the instrument console, exchanged by replacing the memory card, remotely from a server or through SSH. Modular plug-in electronics structure provides highly increased serviceability and maintenance as well as easy hardware field upgrades or replacements. Data Analysis ________________________________________________________ scai can perform realtime single/double integration, differentiation, HP/LP/BP filtering, decimation, peak/average calculations on the physical sensor signal and can provide these as realtime virtual signal. All recording and monitoring features can be applied on the virtual signals, simultaneous to the physical signals. Sensor× _____________________________________________________________ Internal: scai can include select GeoSIG sensors internally. In that case the model

name changes accordingly and the sensor levelling is achieved via the three levelling screws of the single bolt mounted base plate of the scai.

External: All GeoSIG sensors and any other third-party sensors with following specifications can be connected to scai as external sensor(s):

Sensor output: Differential: ± 20 V, ± 10 V, ± 2.5 V Single ended×: 0 - 20 V, 0 - 10 V, 0 - 2.5 V Current loop×: 4 - 20 mA Power to sensor: 15 or 24 VDC / 600 mA Digitizer _____________________________________________________________ Channels: 3 or 6× A/D conversion: 24 bit D-S converters individual for each channel DSP: 32 bit output word length Dynamic range: Overall: 146 dB per-bin @ 1 Hz rel. full-scale RMS 137 dB @ 50 sps peak-peak RMS to RMS shorted input noise Wide-band: 0 - 500 Hz 118 dB RMS full-scale peak to RMS shorted input noise ANSS: 0.002 - 50 Hz 127 dB RMS full-scale peak to RMS shorted input noise 0.01 - 15 Hz 132 dB RMS full-scale peak to RMS shorted input noise 15 - 30 Hz 133 dB RMS full-scale peak to RMS shorted input noise Sampling rate: configurable up to 6 channels @ 2000 sps supports 2 different simultaneous sample rates each channel can have different sampling rates Max. bandwidth*: 0 to 1000 Hz Anti-Aliasing Filter: Analog and digital FIR (finite impulse response) Triggering ___________________________________________________________ Several Trigger Sets can be defined in the instrument. Each set can be flexibly configured regarding the source of trigger, main and advanced trigger parameters, trigger processing and selected channels for storage. A voting logic based on the monitored channels can be defined. Trigger Filter: Fully independent high-, low- or bandpass trigger filters can be

configured. Level: User adjustable threshold. STA/LTA: User adjustable STA / LTA values and STA/LTA trigger and de-

trigger ratio. Scheduled / Manual: After start-up, at a given date/time, after event or

manual triggers Early Warning (EEW)×: JMA Earthquake Early Warning Event Recording ______________________________________________________ Pre-event memory: 1 - 720 seconds, typical Post-event duration: 1 - 7200 seconds, typical Event Summary and Parameters _________________________________________ Content: PGA, PGV, PGD, SA (at 0.3, 1, 3 Hz) Transmission delay: User defined from trigger time Ring Buffer __________________________________________________________ Usage: User can request an event from any period of the ring buffer by

specifying the start time/date and the duration from the console or remotely from a server.

Method: Ringbuffer files with configurable duration which can be uploaded automatically to data server.

Data Stream __________________________________________________________ Protocol/Compatibility: GSBU, SeedLink, compatible to Earthworm Storage Memory ______________________________________________________ Size and Type: 8 GByte Removable SD Card, FAT32 or EXT4 formatted higher

capacity on request× Management: Intelligent management of memory card capacity using policies

as per file type and ring buffer capacity specification. Recording format: miniSEED and extended miniSEED with information en-

capsulated into blockette 2000 Estimated Capacity: Sampling rate [sps] x 0.4 [MB / day / 3 channel]

(example: 40 MByte / day / 3 channel @ 100 sps) typical, since the data is compressed, capacity depends on the

context of the data Indicators ____________________________________________________________ LED Indicators: RGB LEDs for Power, System, Data, Network and Sensor

Self Test _____________________________________________________________ - Permanent self-monitoring of hardware and software components without affecting

their normal operation. - User-configurable periodical state of health (SOH) report based on comprehensive

test of instrument, which can be requested at any time. - User-configurable periodical sensor test. - Advanced sensor testing with sine, saw and square wave injections. - Logging of temperature and humidity inside the unit. Timing ______________________________________________________________ Internal clock: Intelligent Adaptive Real Time Clock (IARTC) Sources: Network Time Protocol (NTP), GNSS (GPS, GLONASS, BeiDou and Galileo) with external

antenna up to 5 m cable, or with external module up to 100 m cable×, wired interconnection (ICC)×

Free running drift: without any source: ±0.5 ppm @ constant +25 °C

±2.5 ppm @ -10 to +50 °C after learn (source disconnect): < ±0.5 ppm @ -10 to +50 °C Accuracy: Running free: calculate from above drift Running with NTP: < ±0.5 ms Running with GPS or ICC: < ±0.001 ms Power Supply ________________________________________________________ Input voltage: 9 - 48 VDC 90 - 260 VAC / 50 - 60 Hz to 15 VDC switched UL approved

external power block× Power over Ethernet: Mode A and B Power consumption: 130 mA @ 12 VDC for 3 channels 200 mA @ 12 VDC for 6 channels Internal battery×: 7.2 Ah for > 24 h autonomy with intelligent charger, higher

autonomy is available with external batteries Communication ______________________________________________________ Configuration, Data Retrieval: Ethernet, Wi-Fi×, Serial line, Console,

Removable SD card, USB-storage× Network requirements: Fixed or Dynamic IP on Ethernet LAN and/or Internet

connection with Ethernet interface or OpenVPN, upload to HTTPS and SFTP servers, Wi-Fi (b/g/n) network with WEP, WPA, WPA2 security and Enterprise Mode×

Security: GeoDAS proprietary protocol over SSL, Checksum and software handshaking Serial ports: 2 ports (console and streaming) Baud rates: Console: 115200 baud Serial Stream×: 38400, 57600, 115200 baud Alarm and Notification× ________________________________________________ Alarms: 3 independent or 4 common solid state relay contacts (user

selectable) for trigger alarm and/or error; with “acknowledge input” support. This provides a seismic switch functionality. SMS notification is available.

Alarm levels: Configurable based on event triggers Relay Hold-On: 1 to 60 seconds (User programmable) Capacity: The contacts are suitable for a low voltage control. In case a

large load must be switched then external relays should be implemented.

Max voltage: 125 V / 250 mA Wired Interconnection (ICC)× ___________________________________________ GeoSIG proprietary wired common time and common trigger interconnection network via special dedicated cable, distributing GPS-grade time precision among several units. Modem / WAN / LAN Interfaces× _________________________________________ External peripheral modules for cellular 3G/4G, SHDSL, Fibre optic, etc are available. Environment / Reliability _______________________________________________ Operational temperature: -20 to +70 °Cq Storage temperature: -40 to +85 °Cq Humidity: 0 to 100 % RH (non-condensing) MTBF: > 500’000 hours (based on GMS series) Housing _____________________________________________________________ Type: Cast aluminium housing Connectors: Metallic circular screwed, or MIL-style× Size: 296 x 175 x 140 mm (W x D x H) Size with base plate: 296 x 225 x 156 mm (W x D x H) Weight: 4.7 kg (optional < 4 kg×)

1.3 kg base plate, 0.3 kg internal sensor, 2.6 kg internal battery, ask for other options×

Protection: IP65(NEMA 4), IP67(NEMA 6)× Mounting: Base plate with single bolt, surface mount. When base plate

levelled and fixed, scai can be replaced without re-levelling. Easy Transport×: Portability accessories are available to facilitate short term

measurements.

GMS series are produced in different types to suit particular specifications or regulations. Specifications mentioned in this datasheet may be different among different types. ×: optional q: use of an internal battery may degrade this specification £: Retrieved data can be in the following formats depending on transmission, software and storage method used: miniSEED, DAT, ASCII, SEISAN, SUDS, SAC, SEG-2, Matlab, Artemis